Improvement in railway-rail joints



'H. ALLEN.

Railway Bail-Joints.

' Pa.tentedAug.3,I875-.

WITNESSES ATTORNEYS N PETERS, FMOTO-LITHOGRAPNER, WASHINGTON, D. c.

UNITE STATES HO SEA ALLEN, 0F TITUSVILLE, PENNSYLVANIA.

IMPROVEMENT IN RAILWAY-RAIL JOINTS.

Specification forming part of Letters Patent No. 166.243, dated August 3, 1875; application filed June 19, 1875.

To all whom it may concern:

Be it known that I, HOSEA ALLEN, of Titus ville, in the county of Crawford and State of Pennsylvania, have invented a new and valuable Improvement in Railroad-Rail Chairs; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon:

Figures 1 and 2 of the drawings are representations of transverse vertical sections of my railroad-rail chair, and Fig. 3 is a plan view, part sectional, of the same. Figs. 4 and 5 are sectional detail views.

This invention has relation to improvements in chairs for railroad-rails; and the nature of the invention consists in combining with sectional plates, each conforming to the shape of the web and supporting-flange on its side of the rail, and with a joint-block adapted to be snugly received into mortises cut into the con tiguous ends of the rails, one or more bolts adapted to be passed into registering perforations in the sectional parts of the chair and joint-blocks, whereby the rails are prevented from lateral displacement relative to each other, and are allowed to have a degree of endwise displacement for the purpose of allowing them to contract and expand under varying temperatures without breaking the bolts, as will be hereinafter more fully explained. In the annexed drawings, A A designate two adjoinin grails, having in their contiguous ends between the threads at and supporting-flanges b-that is to say, in their websrecesses of rectangular -form adapted to receive each onehalf of a joint-block, B. This block is provided at each side of the joint of the rails with one or more perforations, adapted to re ceive a bolt or bolts, I), each having an e11- larged head, 0, which bolts pass through registering-perforations in sections 0 of a railroad-chair. These sections are adapted, when placed in position, each to embrace one-half of the contiguous'ends of the rail below the thread--that is to say, they conform to the superficies of the railand they are eachprovidied with a flange, 0, through which registering screw-threaded perforations are made, adapted to receive screws d, by means of which the lower part of these sections is clamped about the lower portion of the rails A A. When bolts 1) are passed through registering-perforations in the segmental chair, and in the joint-block B, and a nut, D, is forcibly set up upon their projecting screwthreaded ends, the upper part of the sectional chair G will be clamped against the web of the rail with sufficient force to hold them against lateral displacement relative to each other. At the same time the clamping force of the said sections will be insufficient to prevent the said rails from endwise displacement adequate to yielding to expansion or contraction consequent upon a change from a higher to alower temperature, and vice versa, without rendering the bolts liable to be broken by such expansion or contraction. With a View to preventing the rails from such end wise displacement as would be suificient to withdraw their ends from the sectional chair above described, I have designed the following: A perforation is cut in the sectional chair, registering with one in the rail, through which is passed a bolt, 6, which latter is secured in position by means of a nut, n, applied upon its projecting screw-threaded end. Nuts D, before alluded to, are each provided upon their under sides with a screw-threaded rabbet, f, which is adapted to be received into a correspondingly screw-threaded perforation in the chair, so that when the said nuts are forcibly set upnpon the ends of bolts b this rabbet will at the same time engage with the thread in the chair. By this means the chair, which is immovable, is made to prevent the said nuts from turning, and a very effectual nut-lock is obtained. In practice the jointblock B will be forcibly driven into the mor; tise in the end of the rails, care being taken that the latter be not split.

What I claim as new, and desire to secure by Letters Patent, is

1. In arailroad-chair, the combination, with the rails A A, and the joint-block B, of the sectional chair U 0, having flanges 0 upon its under side, adapted to be clamped around and In testimony that I claim the above I have about the Web-0f thesaid rails, substantially hereunto subscribed my name in the presence as specified. of two witnesses.

2. The nut D having screw-threaded rah i bet f, in combin ttion with the bolt 1) and sec- HOSEA ALLEN tion. 0 of a ra lroad-cha-ir, having a screw- Witnesses: threaded aperture, g, adapted to receive the O. B. EVANS,

' rabbet on the nut, substantially as specified. 'D. A. RAY. 

